[11] RFR(S) 8200383: Can't build on SPARC Hotspot with code which use math functions

[Vladimir Kozlov]

http://cr.openjdk.java.net/~kvn/8200383/webrev.00/
https://bugs.openjdk.java.net/browse/JDK-8200383

Changes for JDK-8200303 added calls to log2f() math function and it hit 
problem building Hotspot on SPARC - it can't find this function.

For Hotspot build on Solaris we had hack to support old Solaris versions 
which did not have libm.so.2:

http://hg.openjdk.java.net/jdk6/jdk6/hotspot/file/a74480137e6e/make/solaris/makefiles/vm.make#l102

We don't support Solaris 8 and 9 anymore and it is safe to remove the hack.

Tested with tier1 Builds and Hotspot testing (similar to submit-hs).

-- 
Thanks,
Vladimir